Recumbent tricycle sail

ABSTRACT

A land cycle for sailing on land comprising a recumbent tricycle with a first wheel and seat positioned aft of second and third wheels. A boom extending anteriorly of the front wheels engages a tricycle sprint to support a sailing system, which includes a vertically positioned mast engaged with the recumbent tricycle frame between the front wheels. A jib sail is positioned within a butterfly jib boom attached to the forestay and may be adjusted during use by the rider. The mast and combination of forestay, rear stay, mast sidestays and sprint sidestays cooperatively support attachment and use of said jib sail to said recumbent tricycle, thereby allowing a rider to apply wind force to stably motivate said land cycle. Further improvements disclosed and claimed include an independent rear brake, butterfly jib boom sleeve, a tubular jib spar, and a tubular forestay.

FIELD OF THE INVENTION

The present invention relates to a method and apparatus for improvingthe performance of a recumbent tricycle by allowing the user to harnessthe motive force of wind.

CROSS REFERENCE TO RELATED APPLICATIONS

(Not Applicable)

None

STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

No federal funds were used to develop or create the invention disclosedand described in the patent application.

REFERENCE TO SEQUENCE LISTING, A TABLE, OR A COMPUTER PROGRAM LISTINGCOMPACT DISK APPENDIX

Not Applicable

DETAILED DESCRIPTION—BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of the sailing system mounted to arecumbent tricycle as described herein;

FIGS. 1A, 1B and 1C are generalized perspectives of the sailingsubsystems comprising the sailing system described herein;

FIG. 2 is a side view of recumbent tricycle before mounting of thesailing system shown in FIG. 1;

FIG. 3 is a right side view of the front portion of the sailing system;

FIG. 4 is a left side view of the front portion of the sailing systemdescribed herein;

FIG. 5 is a top view of tricycle center section without the sailingsystem mounted as described herein;

FIG. 6 is a detailed view of the jib boom in relation to the recumbenttricycle frame and mast as described herein;

FIG. 7 is a right side perspective view of the sailing system mounted toa recumbent tricycle as described herein;

FIG. 8 is a detailed view of the jib boom of the sailing systemdescribed herein;

FIG. 9 is another embodiment of the sailing system described herein;and,

FIG. 10 is a detailed view of another embodiment of the sailing systemjib boom described herein.

FIG. 11 is a perspective view illustrating the sail as deployedperpendicular to the tricycle.

DETAILED DESCRIPTION

DETAILED DESCRIPTION Element Name Element Number recumbent tricycle 1hub mount 2 front wheels 3 recumbent tricycle boom 4 outriggers 5 mainframe 6 chain wheel 7 pedals 8 accessory mounting tube 9 chain 10 chainguide 11 right side brake handle 12 left side brake handle 13 seat 14recumbent tricycle rear wheel 15 sprint caster 16 steering rods forfront wheels 17 handle bars 18 rear wheel brake handle 19 rear wheelbrake line 20 front derailleur shifter 21 rear derailleur shifter 22rear wheel frame fork 23 rear wheel brake 24 rear wheel tricycle rack 25mast mount 26 mast 27 forestay 28 starboard (right) sprint sidestay 29port (left) sprint sidestay 30 back stay 31 sprint sidestay spreader 32derailleur shifter line 33 stern stay bar 34 dogleg 35 rear starboard(right side) stay 36 rear port (left side) stay 37 starboard (right)mast sidestay 38 port (left side) mast sidestay 39 jib (head) sail 40tricycle sprint bottom stay 41 jib sheet 42 butterfly jib boom 43tricycle sprint 44 butterfly jib boom bracket with cleat 45 jib sheetmast cleat 46 jib swivel 47 jib furler 48 jib sail furler line 49 luffline 50 butterfly jib boom apex 51 rigid jib spar 52 butterfly jib boomsleeve 53 turnbuckle 54 rigid forestay 55 securement pins 56 supportstrut 57 mast rigging subsystem 58 tricycle sprint rigging subsystem 59sail deployment subsystem 60 sailing system 61 sail window 62 disc brake86 disc brake caliper 87

DETAILED DESCRIPTION

In overview, the apparatus and method as described herein teaches asailing method and apparatus which allows a sail to be added to arecumbent tricycle. The inventor discloses and claims adding a frontallymounted sail to an existing recumbent tricycle through a combination ofparts sold as a kit, the method of mounting and using said front sail incombination with a recumbent tricycle and a land sail cycle wherein thesail and recumbent tricycle are integral as well as any other means toaccomplish the function of frontally mounted sails in combination withrecumbent tricycles.

In the following description reference is made to the accompanyingdrawings, which form a part hereof, and in which is shown by way ofillustration specific embodiments in which the invention may bepracticed. These embodiments will be described in sufficient detail toenable those skilled in the art to practice the invention, and it is tobe understood that other embodiments may be utilized and that structuralchanges may be made without departing from the scope of the invention.In the accompanying drawings, like reference characters designate thesame or similar parts throughout the several views.

Recumbent tricycles (sometimes referred to simply as “trikes”) areclosely related to recumbent bicycles, although they have three wheelsinstead of two. Tricycles come in two varieties, the delta, with tworear wheels, and the tadpole, with two front wheels. Most recenthigh-performance tricycles are of the tadpole variety. Tricycles arevery stable and are capable of turning sharply without leaning,producing lateral “g forces” similar to a sports car.

FIG. 1 illustrates a perspective view of one embodiment of the sailingsystem 61 as mounted to a recumbent tricycle 1 and as shown in greaterdetail in FIGS. 3 and 6–10. FIGS. 2, 4 and 5 show the recumbent tricycle1 with various sections of sailing system 61 removed to highlightcertain elements and features discussed in greater detail herein. Inoverview, the sailing system 61 is composed of a mast rigging subsystem58 (FIG. 1A), tricycle sprint rigging subsystem 59 (FIG. 1B) and saildeployment subsystem 60 (FIG. 1C). The mast rigging subsystem 58includes mast 27 and various stays, as shown generally at FIG. 1A incomplete lines and described in more detail herein, which are affixedbetween the recumbent tricycle 1 and the mast 27. A stay, as typicallyused in nautical applications, is defined as a wire, rope or cable. Themast rigging subsystem stays support the mast 27 and distribute forcesgenerated by the jib sail 40 across the mast rigging subsystem 58 andrecumbent tricycle 1 to allow for stable operation of the recumbenttricycle 1 during land sailing. The tricycle sprint rigging subsystem59, as shown generally at FIG. 1B in complete lines, including tricyclesprint 44, sprint sidestays 29 and 30, jib boom 43 and luff line 50,along with other elements further described and defined herein,generally function to support the tricycle sprint 44 which supports thejib sail 40 as deployed. Sail deployment subsystem 60 shown at FIG. 1Cin complete lines includes jib sail 40, jib sheet 42, butterfly jib boom43, butterfly jib boom bracket with cleat 45, jib sheet mast cleat 46,jib swivel 47, jib furler 48, jib sail furler line 49 and luff line 50along with other elements further described and defined herein,functioning to deploy jib sail 40 and cooperating with the otherelements and subsystems of sailing system 61 and recumbent tricycle 1.

Jib sail 40, as shown may be made of any suitable strong lightweightmaterial compatible with sailing which may or may not be transparent.Suitable jib sail 40 materials may include canvas, Aramid fibrelaminates, (also known by the tradename Kevlar®) polyurethane films,Dacron®, Mylar or Pentex laminates, woven fabrics, monofilm andcomposites incorporating carbon or any combination thereof. As designed,the rider may operate the land sail vehicle with a jib sail having amaterial that is relatively opaque. Rider visibility may be increased bychoosing a sail that is fully transparent or as shown in FIG. 1 having atransparent sail window 62.

FIG. 2 illustrates the lower front portion of the recumbent tricycle 1,as found in the prior art, with seat 14 removed to better show frame 6.The general shape of the tricycle frame 6 is that of an isoscelestriangle with a rear wheel 15 at the first vertice of the triangle,proximate to rear wheel frame fork 23 and front wheels 3 at the secondand third vertices of the triangle.

As shown in FIG. 5 the portions of the frame 6 extending out sidewaysfrom the center to the wheels are known as outriggers 5. Hub mounts 2connect the outriggers 5 to the front wheels 3. Extending anteriorly outfrom front wheels 3 is boom 4 upon which chain wheel 7 has been mounted(FIG. 2). Pedals 8 turn chain wheel 7, which is connected through chain10 to a sprocket attached to rear wheel 15. Turning chain wheel 7 allowsmotive force to be applied by a rider sitting on seat 14 attached toframe 6, positioned posterior to front wheels 3. A front derailleurshifter 21 allows changes in the front crankset gear ratio (not shown)through derailleur shifter line 33 (FIG. 5) and rear derailleur shifter22 allows changes in rear cassette gear ratio (not shown) to furtherimprove user selection of tricycle speeds. The tricycle 1 may also beslowed down or stopped using independent brakes (shown as disc brakes 86and calipers 87 in FIG. 5) mounted at both left and right front wheels 3and controlled by right and left brake handles 12, 13 (FIG. 2).Directional control and steering by the rider is delivered throughhandle bars 18 (FIG. 5) which are connected to front wheel steering rods17. To allow the rider to manage the jib sail 40 with left hand andcontrol the recumbent tricycle 1 with right hand, a rear brake 24 (FIG.2) has been added to the rear wheel 15. The rear brake 24 also allowsstable control of the recumbent tricycle 1 through a single brakecontrolled by the rear brake handle 19 (FIG. 6), thus freeing therider's other hand to control the jib sail 40 through jib sail sheet 42.Most recumbent tricycles of the tadpole variety used with this sailingsystem do not come outfitted with a rear-wheel brake. This rear wheelbrake disclosed and claimed herein provides even braking with one hand,freeing the rider's other hand to control the sail deployment subsystem60 of the sailing system 61. The rear wheel brake 24 as shown is onemeans of stably braking the land sail vehicle using one hand, as recitedin the claims.

FIG. 4 illustrates the lower support portion of the tricycle sprintrigging subsystem 59 as attached to the recumbent tricycle 1. As shownin FIG. 4, the tricycle sprint 44 has a first and second end. The firstend of the tricycle sprint 44 is engaged with the boom 4 portion of thetricycle 1 between the front wheels 3 and is positioned anteriorly ofthe front wheels 3 (second and third vertices). The tricycle sprint 44may be a hollow tapered tube made to be lightweight and strong. Thepreferred material is a carbon fiber composite, but other materials maybe chosen such as plastic, steel and or aluminum. This element comprisesthe upper portion of the tricycle sprint rigging subsystem 59 showngenerally at FIG. 1B and the lower portion of the sail deploymentsubsystem 60. It may be mounted to or simply engage boom 4 at the frontaxle.

As shown in FIG. 3, the front (or second end) of the tricycle sprint 44is connected to the lower end of the forestay line 28 and the lower endof the luff line 50 through jib furler 48. As shown, actual connectionhardware is an eye-bolt (no numeral assigned). Those skilled in the artwill appreciate that other attachment means and methods including screwsand brackets may be used without departing from the spirit and intent ofpresent disclosure. In the embodiment shown, the first end of thetricycle sprint 44 detachably abuts boom 4 (FIG. 2). The various sprintsidestays (FIG. 3) shown provide the necessary tension to hold thetricycle sprint 44 in place against the recumbent tricycle boom 4. Withproper modification, the tricycle sprint 44 may also be attached to theboom 4 with securements such as bolts, brackets and screws. The tricyclesprint 44 may be also formed integral with the frame of the recumbenttricycle 1. The tricycle sprint 44 as shown is one means of providingsupport for the lower portion of sailing system 61, as recited in theclaims. Additionally, as shown in FIG. 1, 3, 4, 6 and 7 the front (orsecond end) of tricycle sprint 44 incorporates a caster 16 or wheelmeans to protect the tricycle sprint 44 in the event of contact with theground. The caster 16 as shown is one means of providing support for thetricycle sprint 44, as recited in the claims.

As shown in FIG. 1, 1A and FIG. 7, the mast rigging subsystem 58 has avertically positioned mast 27 having a first and second end. The firstend of the mast 27 mounts to the mast mount 26 (FIG. 5) for engagementwith and mounting upon the tricycle frame 6 between the second and thirdwheels 3. For stability, the mast 27 is mounted in the center betweenthe second and third wheels 3. The mast 27 is supported by a forestay 28(FIG. 1) which is a component of both mast and tricycle riggingsubsystems, 58 and 59, respectively. In the preferred embodiment, themast mount 26 (FIG. 2) is not secured to the frame 6 of the recumbenttricycle 1 but only abuts against it. Those skilled in the arts willappreciate that mast mount 26 may also be secured to the frame 6 withbolts or brackets, or made integral to the frame 6. The mast mount 26and mast 27 may also be fabricated in either one or two distinct pieces.The mast 27 and mast mount 26, as shown, are one means of verticallysupporting the upper portion of sailing system 61, as recited in theclaims.

The forestay 28 is attached to the top of the mast 27 at one end and atthe front end of the tricycle sprint 44 at the other end (FIG. 1). Aback stay 31 having a first end attached to the top end of the mast 27and a second end attached to the tricycle frame 6 proximate the rearvertice. The forestay 28 is one means of supporting the anterior portionof the sailing system 61, as recited in the claims.

As shown in FIG. 1, the back stay 31 starts as one line but may be splitinto two lines using a dogleg 35 before attachment to the stern stay bar34 which attaches to the rear wheel tricycle rack 25 (FIG. 7). In thisconfiguration, the stern stay bar 34 maintains the position of the rearstarboard stay 36 and rear port stay 37 creating or maintaining afunctional space for the rider. The back stay 31 is one means ofsupporting the rear portion of the mast rigging subsystem 58, as recitedin the claims. The rear wheel tricycle rack 25 provides one means ofattachment of the rear portion of the mast rigging subsystem 59 to therecumbent tricycle 1, as recited in the claims.

As illustrated in FIG. 1 and FIG. 7, the starboard mast sidestay 38 hasa first and second end. The first or upper end of the starboard mastsidestay 38 (FIG. 7) is connected to the top end of the mast 27. Thesecond or lower end of the starboard mast sidestay 38 connects to thesecond vertice of the frame 6, which in this embodiment is the hub mount2 of the tricycle 1 (FIG. 5). The starboard mast sidestay 38 (FIG. 7)directs sail system 61 support forces to the right side of tricycle 1 toincrease stability. Also as illustrated in FIG. 1 and FIG. 7, the portmast sidestay 39 has a first and second end. The first or upper end ofwhich is connected to the top end of the mast 27. The second or lowerend of the port mast sidestay 39 connects to the third vertice of theframe 6, which in this embodiment is the hub mount 2 of the tricycle 1.The port mast sidestay 39 directs the mast rigging subsystem 58 supportforces to the left side of tricycle 1 to increase stability. Thestarboard and port mast sidestays 38, 39 work together to prevent themast 27 from moving sideways. (FIG. 1A) The starboard mast sidestay 38and port mast sidestay 39 are one means of restricting the mast 27 frommoving sideways, as recited in the claims.

As illustrated in FIGS. 3 and 7, a starboard (right) sprint sidestay 29supports the right front of the tricycle sprint rigging subsystem 59.The starboard sprint sidestay 29 connects to the tricycle sprint 44 atthe front and then runs through the stay spreader 32 to connect to wheelmount 2 (FIG. 5), proximate the second vertice of tricycle frame 6.Correspondingly, a port (left) sprint sidestay 30 (FIG. 3) supports theleft front of the tricycle sprint rigging subsystem 59. The port sprintsidestay 30 connects to tricycle sprint 44 at the front and runs throughthe sprint stay spreader 32 to connect to wheel mount 2 (FIG. 5),proximate third vertice of tricycle frame 6. The combination of sprintsidestays stabilize the front of the tricycle sprint 44 and restrictsideways movement during sail operation. The starboard sprint sidestay29 and port sprint sidestay 30 are one means of restricting the tricyclesprint 44 from moving sideways, as recited in the claims. Tricyclesprint bottom stay 41 as shown in FIGS. 1 and 4 attaches at the firstend to the underside of recumbent tricycle boom 4 (FIG. 2). The firstend of bottom stay 41 may also be connected to the tricycle frameproximate to the mast mount 26, as long as the tricycle sprint bottomstay 41 does not interfere with the chain wheel 7, pedals 8 or chain 10.The second end of tricycle sprint bottom stay 41 is attached to thefront end of the tricycle sprint 44. Tricycle sprint bottom stay 41provides support for the front portion of tricycle sprint riggingsubsystem 59. The tricycle sprint bottom stay 41 prevents the tricyclesprint 44 from moving upwards when the jib sail 40 is active. Thetricycle sprint bottom stay 41 is one means of restricting the tricyclesprint 44 from moving upwards, as recited in the claims.

Luff line 50, as illustrated in FIG. 8, is a cable or rope runningthrough the front inside portion of the jib sail 40 which is connectedat the top to the jib sail swivel 47 (FIG. 1) and at the bottom to thejib furler 48, which is connected to tricycle sprint 44. The jib furler48 rotates to furl and unfurl the jib sail 40 in combination with jibsail swivel 47. FIG. 7 illustrates the jib sail 40 furled. The jib sail40 is connected at its upper end to mast 27 (FIG. 1) at jib sail swivel47 and at its lower end connects to the anterior end of tricycle sprint44 at jib sail furler 48. The jib sail 40 has a luff line 50 (FIG. 8) onthe leading edge which supports it under load. Deployment of the jibsail 40 (FIG. 1) allows the recumbent tricycle 1 to capture the wind andbe used as a land cycle sail vehicle. The jib sail 40 is one means ofsail for the land cycle sail vehicle, as recited in the claims. The luffline 50 as shown in detail at FIG. 8 is one means of supporting the jibsail 40, as recited in the claims. Additionally, the combination of jibsail swivel 47 and jib sail furler 48 as shown in FIGS. 1 and 7 are onemeans of deploying the jib sail 40, as recited in the claims.

FIGS. 3, 7 and 8 illustrate the butterfly jib boom 43 which bi-sects thelower portion of the jib sail 40. The front portion of the butterfly jibboom 43 is attached to the forestay 28. The leading edge of the jib sail40 (sometimes referred to as the sail “luff”) and the luff line 50, runinside the front portion of the butterfly jib boom 43, but are notattached to the forestay 28 nor to the butterfly jib boom 43, in orderthat the jib sail 40 may be furled freely. The butterfly jib boom 43acts to hold jib sail 40 taunt when unfurled by butterfly jib boombracket with cleat 45 (FIG. 6). The butterfly jib boom bracket withcleat 45 also acts to allow jib sail 40 to be partially or whollyfurled, depending on wind conditions. The butterfly jib boom 43 is onemeans of varying the amount of sail area exposed to the wind, as recitedin the claims.

The front point where the curves of the two tubes comprising thebutterfly jib boom 43 meet is defined as the butterfly jib boom apex 51(FIG. 8). The butterfly jib boom apex 51 is also the connection point tothe forestay 28. The butterfly jib boom 43, as attached to forestay 28,permits the rear end of the butterfly jib boom 43, together with the jibsail 40, to swing to the port or starboard side of the recumbenttricycle 1, depending on the direction of the wind. FIG. 11 illustratesbutterfly jib boom 43 and jib sail 40 swung out to the port side of therecumbent tricycle 1. This action of the butterfly jib boom 43 permitsthe jib sail 40 to be “self-tacking” when the operator changes thedirection of the recumbent tricycle 1 relative to the wind. Thebutterfly jib boom 43 is one means of deploying the jib sail 40 to beself-tacking, as recited in the claims.

FIG. 9 illustrates further embodiments of the sailing system disclosedherein wherein line comprising forestay 28 has been replaced by rigidforestay 55. Preferred materials for the rigid forestay 55 are carbonfiber composites for lightweight, flexibility and rigidity. Alternativematerials such as plastics and lightweight metals or combinationsthereof may also be selected. As shown in FIG. 9 and more particularlyin FIG. 10, the apex of the butterfly jib boom 51 has been furthermodified with the addition of a butterfly jib boom sleeve 53. Thismodification improves upon the butterfly jib boom 43. The butterfly jibboom sleeve 53 fits over the rigid forestay 55 and allows the butterflyjib boom 43 to swing from side to side without permitting the oppositeend of the butterfly jib boom 43 to move up or down. The support struts57 are one means to further strengthen the connection of the butterflyjib boom sleeve 53 to the butterfly jib boom 43. Securement pins 56restrict movement of the butterfly jib boom sleeve 53 along the tubularforestay 55. To reduce the weight of the rigid forestay 55, it may betubular or hollow.

As shown in FIG. 10, the addition of the butterfly jib boom sleeve 53 tothe butterfly jib boom 43 and the use of a rigid tube as a forestay,inside the butterfly jib boom sleeve 53, prevents the back end of thebutterfly jib boom 43 from moving up or down while sailing, which wouldotherwise cause slack or bending in the sail surface area. Thisimprovement makes the self-tacking jib sail 40 maintain maximum surfacearea exposed to the wind at all times increasing the efficiency of thejib sail 40. The butterfly jib boom sleeve 53 in combination withbutterfly jib boom 43 is one means of allowing the rear end of thebutterfly jib boom 43 to swing laterally while maintaining maximumsurface area exposed to the wind at all times, as recited in the claims.Securement pins 56 are one means of restricting movement of thebutterfly jib boom sleeve 53 along the tubular forestay 55, as recitedin the claims. FIG. 11 illustrates the position of the butterfly jibboom 43 as jib sail 40 is swung out away from the tricycle 1 during saildeployment.

FIGS. 9 and 10 also illustrate another embodiment of the sailing systemdisclosed herein. In this embodiment, the luff line 50 has also beenreplaced with a rigid jib spar 52, also capable of minimal flex andhaving enhanced rigidity, similar to the rigid forestay 55. This rigidjib spar 52 does not bow out or bend as does luff line 50. Duringsailing, rigid jib spar 52 increases overall efficiency of jib sail 40during operation by maintaining maximum exposure of “luff” to the wind,by not bending.

The preferred materials for the rigid jib spar 52 are carbon fibercomposites for lightweight flexibility and rigidity. Alternativematerials such as plastics and lightweight metals or combinationsthereof may also be selected. The rigid jib spar 52 may also be tubularor hollow. The rigid forestay 55 and rigid jib spar 52 may beimplemented together as shown in FIGS. 9 and 10 or independently.Although rigid forestay 55 and rigid jib spar 52 as shown in FIGS. 9 and10 are circular, non-circular shapes may also be chosen. The rigidforestay 55 is one means of increasing the rigidity of both the mastrigging subsystem 59 and sail deployment subsystem 60, as recited in theclaims. The rigid jib spar 52 is one means of increasing the rigidity ofthe sailing system 61 to enhance sail performance, as recited in theclaims.

While the invention has been described with reference to preferredembodiments, variations or modifications would be apparent to one ofordinary skill in the art without departing from the scope of theinvention. Consequently, the appended claims should not be limited totheir literal terms, but should be broadly construed in accordance withthe scope of the invention, as described above.

What is claimed to be new and desired to be protected by Letters Patentis set forth in the appended claims:
 1. A land cycle for sailing on landcomprising: a. a recumbent tricycle, wherein said recumbent tricycleincludes: i. a frame having a shape approximating a triangle, havingfirst, second and third vertices; ii. a first wheel having a sprocket,said first wheel connected to said frame and positioned at said firstvertex of said frame; iii. a second and third wheel attached to saidsecond and third vertices of said frame, said second wheel and saidthird wheel opposedly aligned, and wherein said first wheel ispositioned behind said second and third wheels; iv. a seat forsupporting a rider, said seat positioned behind said second and thirdwheels and attached to said frame; v. a boom extending anteriorly ofsaid second and third wheels; vi. a chain wheel supportably attached tosaid boom and positioned anteriorly of said seat, said chain wheelconnecting a set of pedals for input of motive force by said rider to achain driving said first wheel sprocket; vii. a braking system acting onsaid second and third wheels and controllable by said rider; viii. asteering system acting on said second and third wheels and controllableby said rider; b. a tricycle sprint having a first and second end, saidfirst end of said tricycle sprint engaged with said frame between saidsecond and third wheels, said second end of said tricycle sprintpositioned anteriorly of second and third wheels; c. a verticallypositioned mast having a first and second end, said first end of saidmast engaged with said frame between said second and third wheels; d. aforestay having a first and second end, said first end of said forestayattached to said second end of said mast and said second end of saidforestay attached to said second end of said tricycle sprint; e. a backstay having a first and second end, said first end of said back stayattached to said second end of said mast and said second end of saidback stay attached to said frame, proximate said first vertex; f. astarboard mast sidestay having a first and second end, said first end ofsaid starboard mast sidestay attached to said second end of said mastand said second end of said starboard mast sidestay attached to saidframe at said second vertex; g. a port mast sidestay having a first andsecond end, said first end of said port mast sidestay attached to saidsecond end of said mast and said second end of said port mast sidestayattached to said frame at said third vertex; h. a starboard sprintsidestay having a first and second end, said first end of said starboardsprint sidestay attached to said second end of said tricycle sprint andsaid second end of said starboard sprint sidestay attached to said frameproximate said second vertex; i. a port sprint sidestay having a firstand second end, said first end of said port sprint sidestay attached tosaid second end of said tricycle sprint and said second end of said portsprint sidestay attached to said frame proximate said third vertex; j. atricycle sprint bottom stay having a first and second end, said firstend of said tricycle sprint bottom stay attached to said second end ofsaid tricycle sprint and said second end of said tricycle sprint bottomstay attached to said frame proximate to said mast interface with saidframe; k. a luff line having a first and second end, said first end ofsaid luff line connected to said second end of said mast and said secondend of said luff line connected to a furler positioned at said secondend of said tricycle sprint; l. a butterfly jib boom having a first andsecond end, said second end of said butterfly jib boom attached to saidforestay; m. a jib sail having a triangular shape and swivelly attachedalong its first portion by said luff line, said jib sail positionedwithin said butterfly jib boom, said jib sail adjusted by attachment ofsaid top portion of said jib sail to said mast and wherein saidforestay, rear stay, mast sidestays and sprint stays cooperativelysupport attachment and use of said jib sail to said recumbent tricyclethereby allowing a rider to apply wind force to stably motivate saidland cycle.
 2. A land cycle as described in claim 1 having a sprint stayspreader with first and second ends positioned transverse of saidtricycle sprint and wherein said first end of said sprint stay spreadercooperates with said port sprint sidestay and second end of said sprintstay spreader cooperates with said starboard sprint sidestay to maintaina pre-determined distance between said port sprint sidestay and saidstarboard sprint sidestay.
 3. A land cycle as described in claim 2further comprising: a. A back stay having a first and second sectionwherein said first section of said back stay is a single line having anend which is attached to said second end of said mast and said secondsection of said back stay is comprised of a first and second linewherein each of said first and second lines has an end for attachment;b. A stern stay bar having a first and second opposing ends is mountedto said recumbent tricycle frame in a position posterior of said firstwheel and transverse to said first wheel and wherein said stern stay barhas a pre-determined length selected to maintain a pre-determineddistance between said first and second lines of said second section ofsaid back stay and wherein the ends of said first and second lines ofsaid second section of said back stay are attached to said first andseconds ends of stern stay bar.
 4. A land cycle as described in claim 1having a braking system acting upon said first wheel, independent ofsaid braking system acting upon said second and third wheels.
 5. A landcycle as described in claim 1 wherein the tension of said stays may bemechanically adjusted.
 6. A land cycle as described in claim 3 having abraking system acting upon said first wheel, independent of said brakingsystem acting upon said second and third wheels.
 7. A land cycle asdescribed in claim 1 wherein said tricycle sprint is comprised of amaterial selected from the group consisting of aluminum, steel, carbonfiber composite, plastic and combinations thereof.
 8. A land cycle asdescribed in claim 3 wherein said forestay is tubular and comprised of amaterial selected from the group consisting of aluminum, steel, carbonfiber composite, plastic and combinations thereof.
 9. A land cycle asdescribed in claim 6 wherein said forestay is tubular and comprised of amaterial selected from the group consisting of aluminum, steel, carbonfiber composite, plastic and combinations thereof.
 10. A land cycle asdescribed in claim 7 wherein said forestay is tubular and comprised of amaterial selected from the group consisting of aluminum, steel, carbonfiber composite, plastic and combinations thereof.
 11. A land cycle asdescribed in claim 8 wherein said second end of said butterfly jib boomis compromised of a sleeve positioned at the apex of the butterfly jibboom, said sleeve allowing insertion of said forestay, so said butterflyjib boom may rotate upon said forestay.
 12. A land cycle as described inclaim 8 wherein said luff line is comprised of a material selected fromthe group consisting of aluminum, steel, carbon fiber composite, plasticand combinations thereof.
 13. A land cycle as described in claim 9wherein said luff line is comprised of a material selected from thegroup consisting of aluminum, steel, carbon fiber composite, plastic andcombinations thereof.
 14. A land cycle as described in claim 10 whereinsaid luff line is comprised of a material selected from the groupconsisting of aluminum, steel, carbon fiber composite, plastic andcombinations thereof.
 15. A land cycle as described in claim 11 whereinsaid luff line is comprised of a material selected from the groupconsisting of aluminum, steel, carbon fiber composite, plastic andcombinations thereof.
 16. A land cycle as described in claim 15 whereinsaid luff line has a circular shape.
 17. A land cycle as described inclaim 11 wherein said forestay and sleeve have a tubular circular shape.18. A land cycle as described in claim 1, wherein said jib sail istransparent.
 19. A land cycle as described in claim 1, wherein said jibsail has a transparent window.
 20. A land cycle as described in claim18, wherein said jib sail is self-tacking.
 21. A land cycle as describedin claim 19, wherein said jib sail is self-tacking.
 22. A land cycle asdescribed in claim 3, wherein said jib sail is transparent.
 23. A landcycle as described in claim 3, wherein said jib sail has a transparentwindow.
 24. A land cycle as described in claim 22, wherein said jib sailis self-tacking.
 25. A land cycle as described in claim 23, wherein saidjib sail is self-tacking.
 26. A land cycle as described in claim 4,wherein said jib sail is transparent.
 27. A land cycle as described inclaim 4, wherein said jib sail has a transparent window.
 28. A landcycle as described in claim 26, wherein said jib sail is self-tacking.29. A land cycle as described in claim 27, wherein said jib sail isself-tacking.
 30. A land cycle as described in claim 7, wherein said jibsail is transparent.
 31. A land cycle as described in claim 7, whereinsaid jib sail has a transparent window.
 32. A land cycle as described inclaim 11, wherein said jib sail is transparent.
 33. A land cycle asdescribed in claim 11, wherein said jib sail has a transparent window.34. A land cycle as described in claim 6, wherein said tricycle sprinthas a caster mounted for ground contact.
 35. A land cycle as describedin claim 26, wherein said tricycle sprint has a caster mounted forground contact.
 36. A land cycle as described in claim 27, wherein saidtricycle sprint has a caster mounted for ground contact.
 37. Anapparatus for sailing on land comprising: a. a recumbent tricycle,wherein said recumbent tricycle includes: i. a frame having a shapeapproximating a triangle, having first, second and third vertices; ii. afirst wheel having a sprocket, said first wheel connected to said frameand positioned at said first vertex of said frame; iii. a second andthird wheel attached to said second and third vertices of said frame,said second wheel and said third wheel opposedly aligned, and whereinsaid first wheel is centrally positioned behind said second and thirdwheels; iv. a seat for supporting a rider, said seat positioned behindsaid second and third wheels and attached to said frame; v. a boomextending anteriorly of said second and third wheels; vi. a chain wheelsupportably attached to said boom and positioned anteriorly of saidseat, said chain wheel connecting to a set of pedals for input of motiveforce by said rider to a chain driving said first wheel sprocket; vii. abraking system acting on said second and third wheels and controllableby said rider; viii. a steering system acting on said second and thirdwheels and controllable by said rider; b. A sail deployment meansattached to said recumbent tricycle; c. A sail means connected to saidsail deployment means; d. A sail support means, said sail support meansattached between said recumbent tricycle and sail deployment means todistribute forces generated by said sail across said recumbent tricycleallowing stable operation of said recumbent tricycle during landsailing.
 38. An apparatus for sailing on land as described in claim 37,wherein said sail support means includes a vertical support meansmounted to said recumbent tricycle to support the upper portion of saidsail support means.
 39. An apparatus for sailing on land as described inclaim 38, wherein said sail support means includes a tricycle sprintmounted to said recumbent tricycle to support the lower portion of saidsail deployment means.
 40. An apparatus for sailing on land as describedin claim 39, wherein said sail support means includes means to restrictsideways movement of said vertical support means.
 41. An apparatus forsailing on land as described in claim 40, wherein said sail supportmeans includes means to restrict sideways movement of said tricyclesprint means.
 42. An apparatus for sailing on land as described in claim41, wherein said sail support means is rigid.
 43. An apparatus forsailing on land as described in claim 42, wherein the sail means istransparent.
 44. An apparatus for sailing on land as described in claim40, wherein sail deployment means allows said sail means to beself-tacking.
 45. An apparatus for sailing on land as described in claim41, wherein said sail deployment means allows said sail means to beself-tacking.
 46. An apparatus for sailing on land as described in claim42, wherein said sail deployment means allows said sail means to beself-tacking.
 47. An apparatus for sailing on land as described in claim46, wherein said sail means is transparent.
 48. An apparatus for sailingon land as described in claim 41, wherein said land sail vehicle has abraking system acting on said first wheel.
 49. An apparatus for sailingon land as described in claim 42, wherein said land sail vehicle has abraking system acting on said first wheel.
 50. An apparatus for sailingon land as described in claim 46, wherein said land sail vehicle has abraking system acting on said first wheel.
 51. An apparatus for sailingon land as described in claim 46, wherein said sail means istransparent.
 52. An apparatus for sailing on land as described in claim50, wherein said sail means is transparent.
 53. An apparatus for sailingon land as described in claim 24, wherein said sail deployment meansallows said sail means to be self-tacking.
 54. An apparatus for sailingon land as described in claim 37, wherein said sail means may be furledand unfurled.
 55. An apparatus for sailing on land as described in claim52, wherein said sail means may be furled and unfurled.
 56. An apparatusfor sailing on land as described in claim 42, wherein said saildeployment means and said sail support means are integral to saidrecumbent tricycle.
 57. An apparatus for sailing on land as described inclaim 48, wherein said sail deployment means and said sail support meansare integral to said recumbent tricycle.
 58. An apparatus for sailing onland as described in claim 50, wherein said sail deployment means andsaid sail support means are integral to said recumbent tricycle.
 59. Anapparatus for sailing on land as described in claim 52, wherein saidsail deployment means and said sail support means are integral to saidrecumbent tricycle.
 60. A combination of cooperating elements offered asa kit for converting a recumbent tricycle to a land sail vehiclecomprising: a. a tricycle sprint having a first and second end, saidfirst end of said tricycle sprint allowing for cooperative engagementwith the frame of a recumbent tricycle between the second and thirdwheels of the recumbent tricycle, said second end of said tricyclesprint positioned anteriorly of the second and third wheels of therecumbent tricycle wherein said recumbent tricycle is further comprisedof: i. a frame having a shape approximating a triangle, having first,second and third vertices; ii. a first wheel having a sprocket, saidfirst wheel connected to said frame and positioned at said first vertexof said frame; iii. a second and third wheel attached to said second andthird vertices of said frame, said second wheel and said third wheelopposedly aligned, and wherein said first wheel is centrally positionedbehind said second and third wheels; iv. a seat for supporting a rider,said seat positioned behind said second and third wheels and attached tosaid frame; v. a boom extending anteriorly of said second and thirdwheels; vi. a chain wheel supportably attached to said boom andpositioned anteriorly of said seat, said chain wheel connecting to a setof pedals for input of motive force by said rider to a chain drivingsaid first wheel sprocket; vii. a braking system acting on said secondand third wheels and controllable by said rider; viii. a steering systemacting on said second and third wheels and controllable by said rider;b. a vertically positioned mast having a first and second end, saidfirst end of said mast engaged with said frame between said second andthird wheels; c. a forestay having a first and second end, said firstend of said forestay attached to said second end of said mast and saidsecond end of said forestay attached to said second end of said tricyclesprint; d. a back stay having a first and second end, said first end ofsaid back stay attached to said second end of said mast and said secondend of said back stay attached to said frame, proximate said firstvertex of said frame; e. a starboard mast sidestay having a first andsecond end, said first end of said starboard mast sidestay attached tosaid second end of said mast and said second end of said starboard mastsidestay attached to said frame at said second vertex; f. a port mastsidestay having a first and second end, said first end of said port mastsidestay attached to said second end of said mast and said second end ofsaid port mast sidestay attached to said frame at said third vertex; g.a starboard sprint sidestay having a first and second end, said firstend of said starboard sprint sidestay attached to said second end ofsaid tricycle sprint and said second end of said starboard sprintsidestay attached to said frame proximate said second vertex; h. a portsprint side stay having a first and second end, said first end of saidport sprint side stay attached to said second end of said tricyclesprint and said second end of said port sprint side stay attached tosaid frame proximate said third vertice; i. a tricycle sprint bottomstay having a first and second end, said first end of said tricyclesprint bottom stay attached to said second end of said tricycle sprintand said second end of said tricycle sprint bottom stay attached to saidframe proximate to said mast interface with said frame; j. a luff linehaving a first and second end, said first end of said luff lineconnected to said second end of said mast and said second end of saidluff line connected to a furler positioned at said second end of saidtricycle sprint; k. a butterfly jib boom having a first and second end,said second end of said butterfly jib boom attached to said forestay; l.a jib sail having a triangular shape and swivelly attached along itsfirst portion by said luff line, said jib sail positioned within saidbutterfly jib boom, said jib sail adjusted by attachment of said topportion of said jib sail to said mast and wherein said forestay, rearstay, mast sidestays and sprint stays cooperatively support attachmentand use of said jib sail to said recumbent tricycle thereby allowing arider to apply wind force to stably motivate said land vehicle.
 61. Thecombination of cooperating elements offered as a kit according to claim60 also including a sprint stay spreader with first and second endspositioned transverse of said tricycle sprint and wherein said first endof said sprint stay spreader cooperates with said port sprint sidestayand said second end of said sprint stay spreader cooperates with saidstarboard sprint sidestay to maintain a pre-determined distance betweensaid port sprint sidestay and said starboard sprint sidestay.
 62. Thecombination of cooperating elements offered as a kit according to claim61 further comprising: a. A back stay having a first and second sectionwherein said first section of said back stay is a single line having anend which is attached to said second end of said mast and said secondsection of said back stay is comprised of a first and second linewherein each of said first and second lines has an end for attachment;b. A stern stay bar having a first and second opposing ends is mountedto said recumbent tricycle frame in a position posterior of said firstwheel and transverse to said first wheel and wherein said stern stay barhas a pre-determined length selected to maintain a pre-determineddistance between said first and second lines of said second section ofsaid back stay and wherein the ends of said first and second lines ofsaid second section of said back stay are attached to said first andseconds ends of stern stay bar.
 63. The combination of cooperatingelements offered as a kit according to claim 62 also including a brakingsystem acting upon said first wheel, independent of said braking systemacting upon said second and third wheels.
 64. The combination ofcooperating elements offered as a kit according to claim 63 alsoincluding a set of turnbuckles cooperatively engaged between first andsaid second ends, respectively, of said forestay, said back stay, saidstarboard mast sidestay, said port mast sidestay, said starboard sprintsidestay, said port sprint sidestay, and said tricycle sprint bottomstay to allow independent mechanical tension adjustment.
 65. Thecombination of cooperating elements offered as a kit according to claim64 wherein said tricycle sprint is comprised of a material selected fromthe group consisting of aluminum, steel, carbon fiber composite, plasticand combinations thereof.
 66. The combination of cooperating elementsoffered as a kit according to claim 65 wherein said forestay is tubularand comprised of a material selected from the group consisting ofaluminum, steel, carbon fiber composite, plastic and combinationsthereof.
 67. The combination of cooperating elements offered as a kitaccording to claim 66 including a rigid jib spar instead of a luff line,said rigid jib spar having a first and second end wherein said first endof said rigid jib spar is connected to said second end of said mast andsaid second end of said rigid jib spar is connected to a furler, saidrigid jib functioning to increase overall efficiency of said jib sailduring operation by maintaining maximum wind exposure through enhancedrigidity of said jib sail.
 68. The combination of cooperating elementsoffered as a kit according to claim 67 wherein said rigid jib spar iscomprised of a material selected from the group consisting of aluminum,steel, carbon fiber composite, plastic and combinations thereof.
 69. Thecombination of cooperating elements offered as a kit according to claim60 also including a braking system acting upon said first wheel of saidrecumbent tricycle, independent of said braking system of said recumbenttricycle acting upon said second and third wheels of said recumbenttricycle.
 70. The combination of cooperating elements offered as a kitaccording to claim 69 wherein said jib sail is transparent.
 71. Thecombination of cooperating elements offered as a kit according to claim70 wherein said jib sail has a transparent window.
 72. The combinationof cooperating elements offered as a kit according to claim 67 whereinsaid rigid jib spar is comprised of a material selected from the groupconsisting of aluminum, steel, carbon fiber composite, plastic andcombinations thereof.
 73. The combination of cooperating elementsoffered as a kit according to claim 72 wherein said jib sail istransparent.
 74. The combination of cooperating elements offered as akit according to claim 72 wherein said jib sail has a transparentwindow.